2007/01/31 by Adán Cabello, Adan Cabello, Jan-Åke Larsson · 2 citations
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Atom (system on chip) #Bell state #Bell's theorem #Computer science #Photodetection #Photodetector #Photon #Physics #Quantum #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum entanglement #Quantum mechanics #Spontaneous parametric down-conversion #quant-ph
paper · pdf · doi:10.1103/physrevlett.98.220402
published as Phys. Rev. Lett. 98 (2007) 220402 · REVTeX4, 4 pages, 1 figure
arxiv created 2007/05/31 · openalex publication_date 2007/05/31 · arxiv updated 2022/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In Bell experiments, one problem is to achieve high enough photodetection to ensure that there is no possibility of describing the results via a local hidden-variable model. Using the Clauser-Horne inequality and a two-photon non-maximally entangled state, a photodetection efficiency higher than 0.67 is necessary. Here we discuss atom-photon Bell experiments. We show that, assuming perfect detection efficiency of the atom, it is possible to perform a loophole-free atom-photon Bell experiment whenever the photodetection efficiency exceeds 0.50.